Brake cable



sept 19s BRAKE CABLE Dec. l

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. vPatented Sept. 19, 1933 t LellisY J. Penti' BRAKE CABLE i i nandAlbert Goede, Chicagcfll.

4Applfmtien December 1, 1932. seria1No.645,259

` 4 Clains'.-` ,Korfu- 39) This invention relates to improvements inbrake cables,"and anobject ofthe inventionis the` provision of .a cablewhich will be amply 4protected froml dirtv and moisture, will be`'easily A lubricated, and .consequently will be kept in ,the bestWorking condition at all times. A further object of the invention is theprovision of means for adjusting theV cable, that'is,`making properadjustment for thev stretching to which the cable l0 is subject. Anotherobject is the provision of novel means for assistingfthe release of thebrakeshoes'from the brake drum.

Other objects will appear hereinafter. v The invention consists in thecombinations and claimed.v I. A

The invention will be best understoodby reiference to the accompanyingdrawing, forming a part of this specification, and in which:

Fig. 1 is a side elevational view showing our brake cable attached to acar frame, brake rod, and brake drum housing; y

Fig. 2 is a detail view, partially in section, taken substantially onthe line 2-2 of Fig. 1;

Fig. 3 isa detail view, with parts in section;

Fig. 4 is a sectional View taken substantially'on about spring housing11 and telescoping housing 12. Adjacent one end of collar 13 is providedan annular Vgroove 14 which is adapted to receive a. set screw 15r orother suitable means of attachment at a point adjacent the brake leverand shaft "4.05 of the wheel. Intermediate the ends of collar 13 isprovided a restricted passage 16 to serve as a guide for cable 10.Adjacent one end of collar 13 isa'n enlarged bore 17 for the purpose ofreceiving band 18 which is crimped to cable 10 and 5i is. providedadjacent one end thereof with a shoulder 18a which is adapted to holdyoke 19 and permit the same to swivel on band r18. Yoke. 19 is pivotallysecuredto brake lever 20 for the purpose of causing the settingof thebrakes.

Intermediate the ends of cable 10 and distant from the vcollar 13 anelongated sleeve 21 may be provided to receive housings 11 and 12.Housing 12 may be crimped by the sleeve 21, as at 22, and the housing 11may be clamped by the split portions 23 which are extended outwardlyfrom A spring 27 to seat against..v i

arrangements of 'partsvhereinafter described .and

sleeve 21 and'receive bolt 24 which1 receives nutl 25 .by threadedengzugement therewith.` Sleeve 21 may beprovided witha` suitable oil cup26 for lubricating the 'parts interiorly of said sleeve 21.

A spring 27 having a portion 28- of Areduced size may be providedinterior of sleeve 2 1 and made to abut spring housing 11. 'Ifhe reducedportion of spring A2K7 may be made to passthrough.restricted v portion29 of sleeve 2l, and-said portion29 servesl a guide for slidingYmovenfient of portion 28;- 6i

reduced-portion-29 alsoprovdes a shoulderifor vThe exterior portion- 3()of restrictedportiony ZQHmay serve as an anchoring setfor `thesleevewhich may be securedibya lclamping bracket 31, ;l which isin'turn boltedto frame memberBZ. 'EX- terior of sleeve 21 a sleeve33 may be crimpedaroundy spring portion .28,and' through sleeve 33.

lmayv bapassed set screw34 for securely-ainxing said sleeve to cable l0.Aband 35` havinga shoulderr 36 may be crimped on cable 10, and Athreaded :cap S'Lmaybeswiveled thereto. Cap

37 vmay be 4threadedly attachedto brake rod 38. Y ,y W

which is pivotally .secured to brake lever ,3.9. Power for the movementof brake lever 39 may be obtained from ,brake shaft 40. In cables of thecharacter herein described'and used in the brakingsystems ofautomobiles, there is a tendency for the cables to become stretched 85over a long period of use, and consequently in order to insure theutmost efliciency of the brakes, j it is desirable to compensatel forthis stretching which has occurred-. We have provided for thiscompensation by the above describedY arrange.

ments and parts, and their operation for rthis purpose may briey bedescribed as ollows: Nut 25 may be loosenedon bolt 24 and the clampingportions 23 thus released from spring housing 11.' Flexible housing12'maythen be grasped and pulled upwardly `as in Fig. v1 so as topullspring t housing 11 outwardlyfromvv sleeve 21, and then' with thehousings 11 and. 12 in thisposition nut 25 should be tightened. It canbeseen that this. action will cause flexible housing 11 to bow to a,greater extent between sleeve 21 and collar 13.` Because of the curvedpath which the cable must then follow, itsadditional length will betaken up. and the -pullingaction between brake rod 38 and brake lever 20Will'thus be restored to nor- .105

mal. In order to assist this' action,` if necessary, set screw 34 may beloosened'and sleeve 33 pushed Vtoward sleeve 21 and vthus cause spring27 to be compressed and push housing 11 outwardlyfrom' sleeve 21. Afterclamping nut 25 has been tightened,'s1eeve 33 may be released andtheaction ofspring 27 will restore it to the position shown in Fig. 3; setscrew 34 may then be retightened. l Y Y Y Additional adjustment may bemade by loosening clamping bracket 3l and sliding reduced portion 30 tothe right as shown in Fig. 1. In order to facilitate a great range ofadjustment,

Vreduced portion 30 may be lengthened andspring portion 28 alsolengthened to an appropriate degree. After the movementof portion 30 tothe right as explained clamping bracket 3l may-be again tightened so asto prevent Yany longitudinal .movement It can be seen that theadjustment just described will likewise cause housings l1 and 12 to bowand make the Ypath of travel of cable of Vgreater length; the stretch ofthe cable will thus be compensated for by this'adjustment. y Y g It canbe seenfrom an'V inspection of Fig. y3 that when rod'l38 is moved towardthe left it will pull cable 10 and sleeve'83, and because sleeve '33 iscrimped around spring portion 28, said portion will be stretched. Whenthe tensiononrod 38'is released spring portion 28, being under tension,

will tend to pullrsleeve v33 and cable l0 vback to their originalpositions. rThis continualmotion of the convolutionsof spring portion28Vwill tend to keep foreign substance from entering the'interior ofsleeve 2l, and when grease isapplied under pressure to grease cup 26lthe action *of said grease will tend to expel any dirtor foreignsubstance irom the interior of sleeve 21.

Whilev we have illustrated and described the preferred form'ofconstruction lfor carrying our 35" and modification Without departingfrom the invention into eiect, this is capableof variation spiritof theinvention. We, therefore do not 'wish to be limitedto the precisedetails yof construction set forth, but desire'to avail ourselves 40" ofsuch variations andv modications as come within the scope of theappended claims.

Having thus described our invention, what We claim as new and desire tosecure by Letters Pat-A `entis: 'i I 1. In brakingmechanism, a cable, aiiexible housing surrounding saidV cable, asleeve sur-V rounding saidcable and adapted to embrace said `1lexible housing, means for securingsaid sleeve to said housing member,` anda resilient member f Within saidsleeve member and surrounding said protruding from said sleeve, saidresilient member being adapted to abut against said ,flexibleV housingmember andurge same outwardly from said sleeve member.

fso

Vcable, said resilient member havingl a portion v 2. In brakingmechanism, a cable, a. flexible.v

housingr member surrounding saidr cable, a sleeve ymember surroundingsaid housing and adapted to clampingly receive said housing member,y aresilient member within said sleeve, and aY restricted kportion withinsaid sleeve, said resilient member being adapted to seat against saidrestricted portion and abut against said iiexible housing member;

3. In brakingmechanism, a cable, a flexible.

Amember surrounding said yhousing and adapted to clampinglyY receivesaid housing member, a

lreduced portion carried by saidsleeve, a resilient member within saidsleeve and'providedV with a reduced portion adapted'to protrudefromsaid10ov A sleeve and be embraced by said reduced 'portion of said sleeve,anda band secured to v,said 'rei duced portion of lsaid resilientmembervand to said cable. f

LOUIS J., PONTI."

ALBERT GOEDE.

